Category Archives: ESP32

Add-On Makes ESP32 Camera Board Easier To Program

Don’t you just hate it when dev boards have some annoying little quirk that makes them harder to use than they should be? Take the ESP32-CAM, a board that started appearing on the market in early 2019. On paper, the thing is amazing: an ESP32 with support for a camera …read more

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Posted in Arduino IDE, camera, digital cameras hacks, ESP32, ESP32-CAM, ftdi, gpio, programming, reset, serial, sketch, usb, video wall | Leave a comment

ESP32 Audio Sampling with Interrupts and IRAM

Interrupting while someone is talking is rude for humans, but smart for computers. [Ivan Voras] shows how to use interrupts to service the ESP32 analog to digital converters when sampling sound. Interestingly, he uses the Arduino IDE mixed with native ESP-IDF APIs to get the best performance.

Like most complex …read more

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Posted in Arduino Hacks, ESP32, interrupts, iram | Leave a comment

Hackaday Podcast 045: Raspberry Pi Bug, Rapidly Aging Vodka, Raining on the Cloud, and This Wasn’t a Supercon Episode

Hackaday editors Mike Szczys and Elliot Williams talk over the last three weeks full of hacks. Our first “back to normal” podcast after Supercon turns out to still have a lot of Supercon references in it. We discuss Raspberry Pi 4’s HDMI interfering with its WiFi, learn the differences between …read more

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Posted in Cloud Print, CoreXY, ESP32, Hackaday Columns, leds, podcast, Podcasts, Raspberry Pi 4, WiFi Jammer | Leave a comment

Start Your Day With The Mountain That Rises

Like many of us, [Zach Archer] enjoys the comfort of his darkened room so much that he has trouble getting up and facing the day. To make things a little easier for himself, he decided to put together a custom alarm clock that would fill his mornings with the glorious …read more

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Posted in 3D printed enclosure, clock, clock hacks, e-ink, ESP32, led hacks, web interface | Leave a comment

The ESP32, Laid Bare

Most readers will be familiar with the ESP32, Espressif’s dual-core processor with integrated WiFi and Bluetooth. Few of us though will have explored all of its features, including its built-in encryption facilities and secure booting capability. With these, a developer can protect and secure their code, and keep their devices …read more

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Posted in ESP32, glitching, Microcontrollers, news, security, security hacks | Leave a comment

A Self-Expanding PWM Driver

For smaller microcontrollers, having enough outputs for the job is sometimes a challenge. A common solution is to do some sort of multiplexing with the available outputs or perhaps something more advanced such as Charlieplexing, but another good option is to use a specialized driver board. What’s even better is …read more

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Posted in driver board, ESP32, headers, inputs, led, microcontroller, Microcontrollers, multiplexing, outputs, shield, trick | Leave a comment

An ESP32 Clock With A Transforming LED Matrix

Over the years we’ve seen countless ways of displaying the current time, and judging by how many new clock projects that hit the tip line, it seems as though there’s no end in sight. Not that we’re complaining, of course. The latest entry into the pantheon of unusual timepieces is …read more

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Posted in 3D printed enclosure, clock, clock hacks, ESP32, folding, led hacks, led matrix, ntp, reed switch | Leave a comment

The MorningRod Wants Your Mornings Easier, Not Harder

Curtains are about as simple as household devices get, but they can be remarkably troublesome to automate. Everyone’s window treatments slightly different, which frustrates a standardized solution. [dfrenkel] has a passion for DIY and wanted his mornings flooded with sunlight for more peaceful awakenings, so the MorningRod Smart Curtain Rod …read more

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Posted in 3d printed, curtains, ESP32, home automation, home hacks, NEMA17, wireless hacks | Leave a comment

This Word Clock Has Dirty Alphanumeric Mouth

Clocks which use words to tell the time in place of numbers are an increasingly popular hacker project, but we have to admit that before seeing this gorgeous clock from [Mitch Feig], we didn’t realize how badly we wanted to see one that could curse like a sailor.

But don’t …read more

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Posted in alphanumeric display, clock hacks, ESP32, led, Microcontrollers, web interface, word clock | Leave a comment

Tiny ESP32 Fits inside USB-A Connector

The ESP32 was introduced a few years ago as an inexpensive way to outfit various microcontrollers with WiFi or Bluetooth. Since then it has been experimented with and developed on, thanks to its similarities to the ESP8266 and the ability to easily program it. Watching the development of this small …read more

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Posted in bluetooth, d2wd, ESP32, femto, Femtoduino, Microcontrollers, micropython, small, usb, wifi | Leave a comment